interface Point {
    x: number,
    y: number
}

interface Point2 {
    x: number,
    y: number
}

function printCoord(pt: Point) {
    // ...
}

const pt: Point2 = { x: 1, y: 1 };

printCoord(pt);

//////////////////////////////////////

interface Animal {
    name: string
}

interface Bear extends Animal {
    honey: boolean
}

const bear: Bear = { name: '', honey: false };

//////////////////////////////////////

interface Window {
    title: string
}

interface Window {
    ts: any
}

// console.log(window.title, window.ts);

export {};